Saltopus is the smallest and lightest dinosaurs which is similar to procompsognathus, was not tall as domestic cat which is weighed as 21b/1 kg.

Saltopus elginensis is considered to be Scotland's oldest dinosaur. It was discovered by chemist William Taylor, but was donated to the Natural History Museum in London. It was a very little bipedal reptile, roughly 23 inches (60 centimeters) long, discovered in Scotland. It was a late Triassic carnivore and it may have weighed in at approximately two pounds (one kilogram), and had five-fingered hands and a long head with dozens of sharp teeth. None of this can be recognized for certain, as Saltopus is known only from very poor fabric (mostly hind limb fragments).

As small as it was, its carnivorous diet must have consisted first and
foremost of scavenged carcasses or insects. It has been variously recognized
as a saurischian (lizard-hipped) dinosaur; a theropod (a fast-moving bipedal
carnivore with clawed digits and hands on the forelimbs); and a close
family member of the Herrerasaurus of the Herrerasauria infraorder, but
its taxonomy is in argument because only fragmentary remains have been
recovered. It may also have been a lagosuchid (a primitive reptile from
which the dinosaurs arose) or an ornithosuchian (closely connected cousins
of dinosaurs) instead of a true dinosaur. It has also been optional that
the supposed Saltopus remains may, in fact, be incomplete remains of some
already-identified animal.

Saltopus facts:

Name:

Saltopus elginensis

Size:

2 ft/60cm long

Main Facts:

Four of the spine's sacral vertebrae were fused to its hips and this is a fairly solid anchor for the long running legs.

Rich resources:

Saltopus

Author:Dougal DixonPublications:2006Description:Describes about the very first dinosaurs Saltopus and also some others like Plateosaurus, the Lilensternus, the Melanorosaurus, the Abrictosaurus, and the Coelophysis.

Saltopus the first dinosaur

Author:Dougal DixonPublications:1987Description:Introduce the characteristics and natural environment of thirteen early dinosaurs such as Saltopus and Dimetrodon. Saltopus was a tiny dinosaur, built like a chicken. It walked on its back legs. In animals that arose after Saltopus, the fourth and fifth fingers disappeared.